/* Approved AI workspace: readable conversation first, source reading on demand. */
#assistantControls[hidden],#assistantSession[hidden],#companionTrigger[hidden],#assistantGoal[hidden]{display:none!important}
#assistantReturnReading[hidden]{display:none!important}
.assistant-reading-actions,.reading-ai-mobile-tabs{display:none}
/* A document discussion is a reading tool, with the same conversation used in focus mode. */
.app-shell.reading-ai-active{grid-template-columns:var(--p2e-rail) minmax(0,1fr) clamp(360px,30vw,440px)!important;grid-template-rows:minmax(0,1fr)!important;gap:0}
.app-shell.reading-ai-active>.library-panel{display:grid!important;grid-column:1;grid-row:1;width:var(--p2e-rail)!important;grid-template-columns:var(--p2e-rail)!important;min-width:0}
.reading-ai-active .library-detail,.reading-ai-active>.panel-resizer{display:none!important}
.app-shell.reading-ai-active>.workspace-panel{display:flex;grid-column:2;grid-row:1;min-width:0;min-height:0}
.app-shell.reading-ai-active>.ai-panel{position:static!important;display:flex!important;grid-column:3;grid-row:1;width:100%!important;height:100%!important;max-height:none!important;transform:none!important;inset:auto!important;border-left:1px solid var(--line);box-shadow:none!important;min-height:0;min-width:0}
.reading-ai-active .ai-panel>.ai-header{display:none}
.reading-ai-active .ai-mode-panel{display:flex;flex-direction:column;min-height:0;flex:1;overflow:hidden}
.reading-ai-active #assistantControls{padding:14px 16px;gap:10px;flex-shrink:0}
.reading-ai-active .assistant-heading{flex:1 1 100%}
.reading-ai-active .assistant-header-actions{width:100%;justify-content:flex-end}
.reading-ai-active .assistant-layout-switch,.reading-ai-active #assistantReturnReading,.reading-ai-active .assistant-mobile-tabs{display:none!important}
.reading-ai-active .assistant-reading-actions{display:flex;gap:5px;margin-left:auto}
.reading-ai-active .assistant-reading-actions button{display:flex;align-items:center;gap:5px;border:0;background:transparent;min-height:36px;min-width:36px;padding:7px;color:var(--green)}
.reading-ai-active #chatMessages{flex:1;min-height:0;padding:18px 16px 8px;overflow:auto;overscroll-behavior:contain}
.reading-ai-active .ai-panel .assistant-composer{width:calc(100% - 24px);margin-top:8px;margin-bottom:max(12px,env(safe-area-inset-bottom))}
.reading-ai-active .assistant-model-row{flex-basis:100%}
.reading-ai-active #assistantMode{width:80px}
.reading-ai-active #chatMessages>.welcome-message{margin:auto 0;padding:16px 8px}
.reading-ai-active .assistant-welcome h3{font-size:21px;line-height:1.5}
.reading-ai-active #shellDocumentTools button,.reading-ai-active #shellDocumentTools summary{white-space:nowrap;flex-shrink:0}
@media(min-width:1000px) and (max-width:1200px){
 .reading-ai-active #shellDocumentAccess{display:none}
 .reading-ai-active #shellLibraryToggle span,.reading-ai-active #shellDocumentTools>.reading-immerse span{display:none}
}
@media(max-width:999px){
 .app-shell.reading-ai-active{grid-template-columns:var(--p2e-rail) minmax(0,1fr)!important;grid-template-rows:auto minmax(0,1fr)!important}
 .app-shell.reading-ai-active>.library-panel{grid-row:1/3}
 .reading-ai-active>.reading-ai-mobile-tabs{display:flex;grid-column:2;grid-row:1;gap:8px;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--line)}
 .reading-ai-mobile-tabs button{flex:1;display:flex;align-items:center;justify-content:center;gap:7px;min-height:44px;border:0;border-radius:7px;color:var(--green);background:transparent}
 .reading-ai-mobile-tabs button[aria-pressed=true]{background:var(--p2e-soft);font-weight:600}
 .app-shell.reading-ai-active>.workspace-panel,.app-shell.reading-ai-active>.ai-panel{grid-column:2;grid-row:2}
 .reading-ai-active[data-assistant-pane=chat]>.workspace-panel,.reading-ai-active[data-assistant-pane=paper]>.ai-panel{display:none!important}
}
@media(max-width:680px){
 .app-shell.reading-ai-active{grid-template-columns:minmax(0,1fr)!important;grid-template-rows:auto auto minmax(0,1fr)!important}
 .app-shell.reading-ai-active>.library-panel{display:block!important;position:static!important;width:100%!important;height:auto;max-height:none;min-height:0;grid-column:1;grid-row:1;box-shadow:none;overflow:visible}
 .reading-ai-active .library-rail{display:flex;flex-direction:row;width:100%;height:56px;min-width:0;padding:6px 8px;gap:4px;border:0;border-bottom:1px solid var(--line)}
 .reading-ai-active>.reading-ai-mobile-tabs{grid-column:1;grid-row:2}
 .app-shell.reading-ai-active>.workspace-panel,.app-shell.reading-ai-active>.ai-panel{grid-column:1;grid-row:3}
 .reading-ai-active #assistantControls{padding:10px 14px;gap:8px}
 .reading-ai-active #assistantControls button,.reading-ai-active #assistantControls summary{min-height:44px;min-width:44px}
 .reading-ai-active #chatMessages{padding:14px 16px 8px}
}
#assistantControls{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 22px;background:var(--panel);border-bottom:1px solid var(--line);min-width:0;flex-wrap:wrap;z-index:15}
.assistant-heading{min-width:0;flex:1}
#assistantTitle{font-size:17px;line-height:1.45;font-weight:650;margin:0 0 5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.3px}
.assistant-context-row{display:flex;align-items:center;gap:14px;min-width:0}
#assistantControls .assistant-context-row button{display:inline-flex;align-items:center;gap:6px;border:0;background:transparent;padding:1px 0;min-height:28px;font-size:12px;min-width:0;color:var(--green)}
#assistantControls #assistantSources{max-width:290px;text-align:left;flex:0 1 auto}
#assistantControls #assistantSources>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#assistantControls #assistantSettings{flex-shrink:0}
.assistant-context-row .p2e-icon{width:15px;height:15px;flex-basis:15px}
.assistant-header-actions{display:flex;align-items:center;gap:7px;flex-shrink:0}
#assistantControls .assistant-header-actions>button{display:flex;align-items:center;justify-content:center;gap:5px;min-height:36px;padding:7px 10px;white-space:nowrap;font-size:13px}
#assistantControls #assistantHistory{border-color:transparent;padding:8px}
.assistant-layout-switch{display:flex;align-items:center;gap:2px;padding:3px;background:var(--paper);border-radius:9px}
#assistantControls .assistant-layout-switch button{min-height:32px;padding:5px 10px;border:0;background:transparent;white-space:nowrap;color:var(--muted);font-size:12px}
#assistantControls .assistant-layout-switch button[aria-pressed=true]{color:var(--green);background:var(--panel);box-shadow:0 1px 3px #17201d18;font-weight:600}
.assistant-tools>summary{display:flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;padding:8px;list-style:none;border-radius:8px;cursor:pointer}
.assistant-tools>div{right:0;left:auto;min-width:210px}
#assistantTools>button{display:flex;align-items:center;gap:7px;width:100%;text-align:left;min-height:40px;padding:8px;border:0;font-size:13px}
#assistantReadonly{flex-basis:100%;margin:0;color:#8b4a18}
.assistant-mobile-tabs,#assistantReaderToolbar,#assistantReaderEmpty{display:none}
/* Global navigation inherits the shared shell width and inline labels on every route. */
.app-shell.shell-assistant-active{grid-template-columns:var(--p2e-rail) minmax(0,1fr)!important;grid-template-rows:auto minmax(0,1fr)!important;gap:0}
.app-shell.shell-assistant-active>.library-panel{grid-column:1;grid-row:1/3;width:var(--p2e-rail)!important;min-width:0;display:grid!important;grid-template-columns:var(--p2e-rail)!important}
.shell-assistant-active .library-detail,.shell-assistant-active .panel-resizer{display:none!important}
.app-shell.shell-assistant-active>#assistantControls{grid-column:2;grid-row:1;width:100%;max-width:none;margin:0}
.app-shell.shell-assistant-active>.ai-panel{grid-column:2;grid-row:2;position:static!important;display:flex!important;inset:auto!important;transform:none!important;width:100%!important;height:100%!important;max-height:none!important;border:0!important;box-shadow:none!important;min-height:0;background:var(--panel)}
.shell-assistant-active .ai-panel>.ai-header{display:none}
.shell-assistant-active .ai-mode-panel{position:relative;display:flex;flex-direction:column;min-height:0;overflow:hidden;flex:1}
.shell-assistant-active #chatMessages{width:100%;max-width:none;margin:0;flex:1 1 auto;min-height:0;max-height:none;padding:24px max(28px,calc((100% - 780px)/2)) 12px;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable}
.ai-panel .message.assistant{max-width:100%;padding:0;border:0;background:transparent;box-shadow:none;border-radius:0;color:var(--ink)}
.ai-panel .message{font-size:calc(15px * var(--ai-font-scale,1));line-height:1.85;margin-top:0;margin-bottom:24px}
.ai-panel .message.user{max-width:90%;width:fit-content;padding:10px 16px;background:var(--p2e-soft);color:var(--ink);box-shadow:none;border:0;border-radius:14px 14px 4px 14px;margin-left:auto;overflow-wrap:anywhere}
.ai-panel .message-content>p:first-child{margin-top:0}.ai-panel .message-content>p:last-child{margin-bottom:0}
.assistant-user-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-top:6px}
.assistant-user-actions button{display:inline-flex;align-items:center;justify-content:center;gap:5px;min-height:32px;padding:4px 6px;border:0;background:transparent;color:var(--muted);font-size:12px;cursor:pointer}
.assistant-user-actions button:hover{color:var(--green);background:var(--panel)}
.assistant-user-actions .p2e-icon{width:14px;height:14px}
.assistant-composer.assistant-image-drag{outline:2px dashed var(--green);outline-offset:3px;background:var(--p2e-soft)}
#assistantAttachImage{display:inline-flex;align-items:center;gap:5px;width:auto;flex-shrink:0;min-width:44px;min-height:36px;padding:5px 7px;border:0;background:transparent;color:var(--green);font-size:12px;cursor:pointer}
#assistantAttachImage>span{white-space:nowrap}
#assistantAttachImage:disabled{color:var(--muted);opacity:.55;cursor:not-allowed}
.assistant-attachments[hidden],.assistant-attachment-status[hidden]{display:none!important}
.assistant-attachments{display:flex;flex-wrap:wrap;gap:8px;padding:10px 0 4px;max-height:180px;overflow:auto}
.assistant-attachment{display:flex;align-items:center;gap:8px;min-width:0;max-width:100%;flex:1 1 230px;padding:6px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}
.assistant-attachment>img{width:48px;height:48px;object-fit:cover;border-radius:5px;flex-shrink:0}
.assistant-attachment>div:not(.assistant-attachment-actions){min-width:0;flex:1}
.assistant-attachment strong{display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:12px;font-weight:500}
.assistant-attachment small{display:block;font-size:12px;line-height:1.45;color:var(--muted);overflow-wrap:anywhere}
.assistant-attachment[data-image-state=failed] small{color:#9b3e28}
.assistant-attachment progress{display:block;width:100%;height:5px;margin-top:4px;accent-color:var(--green)}
.assistant-attachment-actions{display:flex;align-items:center;gap:3px;flex-shrink:0}
.assistant-attachment-actions button{display:flex;align-items:center;justify-content:center;min-width:32px;min-height:36px;padding:4px;border:0;background:transparent;color:var(--green);font-size:12px;cursor:pointer}
.assistant-attachment-status{margin:6px 0 0;font-size:12px;line-height:1.55;color:var(--muted);overflow-wrap:anywhere}
.assistant-message-image{display:inline-flex;flex-direction:column;gap:3px;margin:8px 8px 0 0;max-width:min(240px,100%);font-size:12px;color:var(--green);vertical-align:top}
.assistant-message-image img{max-width:100%;max-height:180px;object-fit:contain;border:1px solid var(--line);border-radius:7px;background:var(--panel)}
.assistant-message-image span{overflow-wrap:anywhere}
.model-picker-list .model-image-capability{display:block;font-size:12px;line-height:1.45;font-weight:400;color:var(--muted)}
.model-picker-list [role=option][aria-disabled=true]{opacity:.52;cursor:not-allowed}
.model-picker-list [role=option][aria-disabled=true]:hover{background:transparent}
@media(max-width:680px){.assistant-user-actions button,#assistantAttachImage,.assistant-attachment-actions button{min-height:44px;min-width:44px}.assistant-attachment{flex-basis:100%}.assistant-attachments{max-height:160px}}
.assistant-message-label{display:flex;gap:7px;align-items:center;font-size:12px;font-weight:600;color:var(--green);margin:0 0 10px}
.assistant-message-label .p2e-icon{width:16px;height:16px;flex-basis:16px}
.ai-panel .message-content h1,.ai-panel .message-content h2,.ai-panel .message-content h3{line-height:1.55;margin:12px 0;font-size:calc(17px * var(--ai-font-scale,1));font-weight:650}
.ai-panel .assistant-result-actions{gap:8px;margin-top:12px}
.ai-panel .assistant-result-actions>button{border-color:transparent;background:transparent;color:var(--muted);font-size:12px;min-height:34px;padding:5px 7px}
.ai-panel .assistant-result-actions>button.primary{color:var(--green);background:var(--p2e-soft)}
.assistant-saved-output{display:flex;align-items:flex-start;gap:8px;margin:16px 0 0;padding:10px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.6;color:var(--green);overflow-wrap:anywhere}
.assistant-saved-output>.p2e-icon{flex-shrink:0;margin-top:3px}.assistant-saved-output>span{min-width:0}.assistant-saved-output strong{font-weight:600}.ai-panel .assistant-saved-output small{display:block;margin:2px 0 0;font-size:12px;color:var(--muted);opacity:1}
.assistant-save-destination{font-size:13px;line-height:1.6;color:var(--green);padding:10px 12px;background:var(--p2e-soft);border-radius:8px;overflow-wrap:anywhere}
.ai-panel .message.assistant .message-content{overflow-wrap:anywhere;min-width:0}
.ai-panel .message.assistant .message-content h1,.ai-panel .message.assistant .message-content h2,.ai-panel .message.assistant .message-content h3,.ai-panel .message.assistant .message-content h4{font-family:inherit;text-wrap:pretty}
.ai-panel .message.assistant .message-content p,.ai-panel .message.assistant .message-content li{line-height:1.8}
.ai-panel .message.assistant .markdown-table-wrap{overscroll-behavior-x:contain;scrollbar-gutter:stable}
.ai-panel .message.assistant table{font-size:calc(14px * var(--ai-font-scale,1));line-height:1.65}
.ai-panel .message.assistant th,.ai-panel .message.assistant td{padding:10px 12px;min-width:110px;word-break:normal;overflow-wrap:anywhere}
.ai-panel .assistant-result-actions>button:hover{background:var(--paper);color:var(--green)}
.ai-panel .assistant-result-more>summary{min-height:34px;border-color:transparent}
.ai-panel .assistant-composer{width:calc(100% - 28px);max-width:820px;margin:8px auto max(14px,env(safe-area-inset-bottom));padding:0 12px 10px;border:1px solid var(--line-strong);border-radius:14px;background:var(--panel);box-shadow:0 3px 15px #17201d06}
.ai-panel .assistant-composer:focus-within{border-color:#88ae9c}
.assistant-composer .assistant-request-settings{display:flex;align-items:center;flex-wrap:wrap;gap:4px 10px;padding:7px 0;border-bottom:1px solid var(--line)}
.assistant-composer .assistant-model-row,.assistant-composer .assistant-mode-row,.assistant-composer .assistant-search-toggle{min-height:30px;display:flex;align-items:center;gap:5px;margin:0}
.assistant-composer .assistant-model-row{flex:1 1 155px;min-width:0}
.assistant-composer .assistant-model-row>label,.assistant-composer .assistant-mode-row>span,.assistant-composer .assistant-search-toggle>span:first-child{width:auto;min-width:24px;font-size:12px;font-weight:400;color:var(--muted);margin:0;white-space:nowrap}
.assistant-composer #assistantModelField{min-width:0;flex:1}
.assistant-composer #modelSelect,.assistant-composer #assistantMode{min-height:30px;height:30px;border:0;background:var(--panel);padding:3px 18px 3px 3px;border-radius:5px;font-size:12px;color:var(--ink);max-width:100%;width:100%}
.assistant-composer #assistantMode{width:64px}
.assistant-composer .assistant-search-toggle{margin-left:auto;gap:5px}
.assistant-composer .assistant-switch-control{min-width:32px;min-height:30px;gap:4px}
.assistant-composer #assistantSearchState{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.assistant-settings-status{flex-basis:100%;margin:0;padding:2px 0}
.ai-panel .assistant-composer .chat-form{width:100%;margin:0;padding:0;border:0;box-shadow:none;outline:0;border-radius:0;background:transparent}
.ai-panel .assistant-composer .chat-form:focus-within{box-shadow:none}
.ai-panel .assistant-composer .chat-form textarea{width:100%;padding:12px 0 4px;height:66px;min-height:66px;max-height:180px;font-size:15px;line-height:1.6;resize:vertical;background:transparent}
.assistant-composer .chat-form .chat-form-footer{display:flex;align-items:center;gap:6px;padding:0;min-width:0}
.assistant-composer #chatSubmitHint{display:none}



.assistant-composer .chat-form-footer [type=submit]{margin-left:auto;flex-shrink:0;width:36px;min-width:36px;min-height:36px;height:36px;border-radius:9px}
.assistant-composer #chatStop{width:auto;padding:5px 8px;min-height:36px;font-size:12px}
.assistant-composer #writingComposerTools:not(.hidden){padding:7px 0 0}
#assistantJumpLatest{position:absolute;right:22px;bottom:calc(var(--assistant-composer-height,170px) + 27px);z-index:8;min-height:36px;padding:6px 12px;background:var(--panel);color:var(--green);border:1px solid var(--line);border-radius:18px;box-shadow:0 2px 10px #17201d10;cursor:pointer;font-size:12px}
#assistantJumpLatest[hidden]{display:none}
.shell-assistant-active #chatMessages>.welcome-message{max-width:490px;margin:clamp(16px,8vh,100px) auto 16px;padding:0 12px}
.shell-assistant-active .assistant-welcome h3{font-size:26px;font-weight:600;line-height:1.4;letter-spacing:-.5px}
.shell-assistant-active .assistant-welcome>span{width:40px;height:40px;font-size:18px;border-radius:12px}
.shell-assistant-active .assistant-welcome div{margin-top:20px}
.shell-assistant-active .assistant-welcome button{border-color:var(--line);background:var(--panel)}
/* Wide reading mode spans the conversation header across both panes. */
.app-shell.shell-assistant-active[data-assistant-layout=split]{grid-template-columns:var(--p2e-rail) minmax(0,43fr) minmax(0,57fr)!important}
.app-shell.shell-assistant-active[data-assistant-layout=split]>#assistantControls{grid-column:2/4}
.app-shell.shell-assistant-active[data-assistant-layout=split]>.workspace-panel{display:flex!important;grid-column:2;grid-row:2;min-width:0;min-height:0;border-right:1px solid var(--line);background:var(--p2e-soft)}
.app-shell.shell-assistant-active[data-assistant-layout=split]>.ai-panel{grid-column:3}
.shell-assistant-active[data-assistant-layout=split] #chatMessages{padding:24px 24px 10px}
.shell-assistant-active[data-assistant-layout=split] #assistantReaderToolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--line);min-height:48px;flex-shrink:0}
#assistantReaderToolbar button{display:flex;align-items:center;gap:7px;border:0;background:transparent;min-height:36px;color:var(--green);padding:5px;cursor:pointer;font-size:12px}
#assistantReaderSelect{min-width:0;flex:1;text-align:left}#assistantReaderTitle{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#assistantReaderExit{flex-shrink:0}
.shell-assistant-active[data-assistant-layout=split] #shellDocumentTools,.shell-assistant-active[data-assistant-layout=split] .workspace-header .mobile-panel-button{display:none}
.shell-assistant-active[data-assistant-layout=split].assistant-reading-pdf .workspace-header{display:none}
.shell-assistant-active[data-assistant-layout=split]:not(.assistant-has-document) .workspace-panel>:not(#assistantReaderToolbar):not(#assistantReaderEmpty){display:none!important}
.shell-assistant-active[data-assistant-layout=split]:not(.assistant-has-document) #assistantReaderEmpty{display:grid;place-items:center;flex:1;text-align:center;padding:24px}
#assistantReaderEmpty h2{font-size:20px;line-height:1.5}#assistantReaderEmpty p{font-size:13px;line-height:1.7;color:var(--muted)}
#assistantReaderEmpty button{min-height:44px;padding:8px 16px;border-radius:8px;border:1px solid var(--green);background:var(--green);color:white}
/* Source and history drawers are native modal dialogs with keyboard focus handling. */
dialog.assistant-history-drawer,dialog.assistant-evidence-drawer{position:fixed;inset:12px 12px 12px auto;margin:0;width:min(420px,calc(100vw - 24px));max-height:calc(100dvh - 24px);height:auto;padding:22px;border:1px solid var(--line);border-radius:14px;overflow:auto}
.assistant-history-drawer>header,.assistant-reader-picker>header,.assistant-display-dialog>header{display:flex;align-items:center;justify-content:space-between;gap:10px}
.assistant-history-drawer h3,.assistant-reader-picker h3,.assistant-display-dialog h3{margin:0;font-size:18px}
.assistant-history-drawer>header button,.assistant-reader-picker>header button,.assistant-display-dialog>header button{display:grid;place-items:center;min-height:40px;min-width:40px;border:0;background:transparent;color:var(--muted);cursor:pointer}
[data-history-list]>button,[data-reader-list]>button{display:block;width:100%;padding:14px 8px;border:0;border-bottom:1px solid var(--line);text-align:left;background:transparent;border-radius:6px;cursor:pointer;color:var(--ink)}
[data-history-list]>button:hover,[data-reader-list]>button:hover,[data-history-list]>button[aria-current=true]{background:var(--p2e-soft)}
[data-history-list]>button>span,[data-reader-list]>button>span{display:flex;align-items:center;gap:8px;font-size:14px}
[data-history-list] strong,[data-reader-list] strong{font-weight:550;overflow-wrap:anywhere;min-width:0}
[data-history-list] small,[data-reader-list] small{display:block;margin:5px 0 0 26px;font-size:12px;color:var(--muted)}
.assistant-reader-picker{width:min(580px,calc(100vw - 24px));max-height:88dvh;overflow:auto}
.assistant-reader-picker>p{font-size:13px;line-height:1.6;color:var(--muted)}
.assistant-display-dialog{width:min(420px,calc(100vw - 24px))}
.assistant-display-dialog .assistant-display-settings{justify-content:flex-start;padding:8px 0}
.assistant-display-dialog .ai-font-controls button{min-width:44px;min-height:44px;border:1px solid var(--line);background:var(--panel);border-radius:8px;color:var(--green);cursor:pointer}
.assistant-display-dialog .ai-font-controls output{font-size:14px;min-width:65px}
.assistant-display-dialog .assistant-font-preview{font-size:calc(15px * var(--ai-font-scale,1));line-height:1.8;background:var(--p2e-soft);padding:16px;border-radius:10px}
.pc-account-display{padding:20px 0;border-bottom:1px solid var(--line)}.pc-account-display p{color:var(--muted);font-size:13px}
@media(max-width:1200px){
 #assistantControls{padding:12px 18px;gap:10px}#assistantControls #assistantSources{max-width:205px}
 .assistant-header-actions{gap:4px}#assistantReaderExit span{display:none}
 .assistant-composer .assistant-request-settings{gap:4px 6px}
}
@media(max-width:999px){
 .app-shell.shell-assistant-active[data-assistant-layout=split]{grid-template-columns:var(--p2e-rail) minmax(0,1fr)!important}
 .app-shell.shell-assistant-active[data-assistant-layout=split]>#assistantControls{grid-column:2}
 .app-shell.shell-assistant-active[data-assistant-layout=split]>.ai-panel,.app-shell.shell-assistant-active[data-assistant-layout=split]>.workspace-panel{grid-column:2;grid-row:2}
 .shell-assistant-active[data-assistant-layout=split] .assistant-mobile-tabs{display:flex;flex:0 0 100%;gap:6px}
 .assistant-mobile-tabs button{flex:1;display:flex;align-items:center;justify-content:center;gap:7px;min-height:36px;border:0}
 .assistant-mobile-tabs button[aria-pressed=true]{background:var(--p2e-soft);color:var(--green);font-weight:600}
 .app-shell.shell-assistant-active[data-assistant-layout=split][data-assistant-pane=chat]>.workspace-panel{display:none!important}
 .app-shell.shell-assistant-active[data-assistant-layout=split][data-assistant-pane=paper]>.ai-panel{display:none!important}
 #assistantControls{flex-wrap:wrap}.assistant-heading{flex:1 1 230px}.assistant-header-actions{margin-left:auto}
}
@media(max-width:680px){
 .app-shell.shell-assistant-active,.app-shell.shell-assistant-active[data-assistant-layout=split]{grid-template-columns:minmax(0,1fr)!important;grid-template-rows:auto auto minmax(0,1fr)!important}
 .app-shell.shell-assistant-active>.library-panel{grid-column:1;grid-row:1;width:100%!important;display:block!important}
 .app-shell.shell-assistant-active>#assistantControls,.app-shell.shell-assistant-active[data-assistant-layout=split]>#assistantControls{grid-column:1;grid-row:2;padding:10px 14px;gap:6px 10px}
 .app-shell.shell-assistant-active>.ai-panel,.app-shell.shell-assistant-active[data-assistant-layout=split]>.ai-panel,.app-shell.shell-assistant-active[data-assistant-layout=split]>.workspace-panel{grid-column:1;grid-row:3}
 .assistant-heading{flex:1 1 100%}#assistantTitle{font-size:16px;margin-bottom:0}
 .assistant-header-actions{width:100%;justify-content:flex-end;margin:0}.assistant-layout-switch{margin-right:auto;padding:2px}
 #assistantControls .assistant-layout-switch button,#assistantControls .assistant-header-actions>button,.assistant-tools>summary,.assistant-mobile-tabs button{min-height:44px;min-width:44px}
 #assistantControls .assistant-header-actions>button{padding:7px}.assistant-tools>summary{padding:10px}
 #assistantControls #chatClear>span{display:none}
 #assistantControls #assistantSources{max-width:calc(100% - 112px)}
 #assistantControls .assistant-context-row button{min-height:36px;gap:5px;font-size:12px}
 .assistant-context-row{gap:12px}
 .shell-assistant-active #chatMessages,.shell-assistant-active[data-assistant-layout=split] #chatMessages{padding:18px 16px 8px}
 .ai-panel .message{margin-bottom:22px;font-size:calc(15px * var(--ai-font-scale,1));line-height:1.8}
 .ai-panel .message.user{max-width:95%;padding:9px 13px}
 .ai-panel .assistant-composer{width:calc(100% - 20px);margin:6px auto max(8px,env(safe-area-inset-bottom));padding:0 10px 8px}
 .assistant-composer .assistant-request-settings{padding:2px 0;gap:0 10px}
 .assistant-composer .assistant-model-row{flex:1 1 100%}
 .assistant-composer .assistant-model-row,.assistant-composer .assistant-mode-row,.assistant-composer .assistant-search-toggle{min-height:44px}
 .assistant-composer #modelSelect,.assistant-composer #assistantMode{min-height:44px;height:44px;font-size:14px}
 .assistant-composer #assistantMode{width:74px}
 .assistant-composer .assistant-switch-control{min-height:44px;min-width:44px;justify-content:center}
 .ai-panel .assistant-composer .chat-form textarea{height:56px;min-height:56px;padding:10px 0 4px;font-size:16px}



 .assistant-composer .chat-form-footer [type=submit],.assistant-composer #chatStop{min-width:44px;min-height:44px;height:44px}
 .ai-panel .assistant-result-actions>button,.ai-panel .assistant-result-more>summary{min-height:44px}
 .shell-assistant-active #chatMessages>.welcome-message{margin:16px auto 8px;padding:0}
 .shell-assistant-active .assistant-welcome h3{font-size:22px}
 .assistant-history-drawer>header button,.assistant-reader-picker>header button,#assistantReaderToolbar button{min-width:44px;min-height:44px}
 #assistantJumpLatest{right:16px;bottom:calc(var(--assistant-composer-height,202px) + 17px)}
}
@media(max-height:550px){
 .shell-assistant-active #assistantTitle{font-size:15px}
 .shell-assistant-active #assistantControls{padding-top:5px;padding-bottom:5px}
 .shell-assistant-active .assistant-composer .chat-form textarea{height:48px;min-height:48px}
 .shell-assistant-active .ai-panel.assistant-short .ai-mode-panel{overflow:auto}
 .shell-assistant-active .ai-panel.assistant-short #chatMessages{flex:1 0 120px;min-height:120px;max-height:none}
 .shell-assistant-active .assistant-heading{flex:1 1 180px}
 .shell-assistant-active .assistant-header-actions{width:auto}
}
@media(prefers-reduced-motion:reduce){.assistant-layout-switch *,#assistantControls *{transition:none!important}}

/* Hidden actions must not be revived by menu flex styles. Mobile layout controls remain available. */
#assistantTools>button[hidden],.assistant-tools:not(:has(button:not([hidden]))){display:none}